base adaptator 28.5 (30) round to 25 square

Base adaptator : 30mm (for 28.5) round to 25mm square.Model created in tinkercad.very simple, not tested.Principe : should have some "on the floor" and other 10mm up", for overlapping. [Edit 2025-11-23 : change licence to BY. you can sold them if you want... was wondering about CC0... so... enjoy ;)]

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